Leer stacker



C. l. HALL LEER 'STACKER April 12, 1932.

Filed Feb. 2, 1929 2 Sheets-Sheet A Horney April 12, 1932.

C. l. HALL LEER STACKER Filed Feb. 2, 1929 2 Sheets-Sheet 2 I "center Attorney Patented Apr.- 12, 1932 UNITED STATES 1,&s3,412

CLARENCE I. HALL, OF OKMULGEE, OKLAHOMA LEEB STACKER' Application filed February 2, 1929. Serial No. 336,953.

The present invention relates to improvements in leer attachment and has reference more particularly to a stacker or conveyor for delivering the glassware into the leer in an expeditious yet efficient manner.

Oneof the important objects of the present invention is to provide a leer stacker or c011- veyor that can be readily and easily installed without necessitating alterations to the leer,

the device being simple in construction, in-

expensive, strong and durable and further well adapted to the purpose for which it is designed.

In the accompanying drawings wherein like reference characters indicate corresponding parts throughout the same:

Figure 1 is a side elevation of the stacker embodying my invention, and illustrating the manner in which the same is associated with a conventional leer.

Figure 2 is a detail perspective view of a portion of the attachment showing the vertically swinging stacker unit, and the actuating means therefor.

Figure 3 is a detail perspective view of the link and lever that operatively connects the sliding plunger of the horizontal cylinder with the horizontally disposed reciprocating rod to which the arm unit is connected.

Figure l is a detail perspective view of the rod for controlling the actuation of the vertically disposed valve unit, and

Figure 5 is a fragmentary perspective view of the bar that is carried by the horizontally movable carriage showing the depending fingers for actuating the horizontally disposed valve unit.

With reference more in detail to the drawings, it will be seen that numeral 1 designates diagrammatically a conventional leer such as is to be found in glass plants, and the endless conveyor belt that extends longitudinally in the leer is shown at 2, there also being the usual conveyor belt 3 arranged at the forward end of the conveyor belt 52 and disposed at right angles with respect thereto in a manner well known in the art. The glassware is initially placed on the endless conveyor belt 3 and is adapted to be transferred on to the endless conveyor belt 2 within the leer 1 in a mannerto be presently described and by the use of my improved stacker.

My improved stacker includes an elongated rod 4 that is arranged for horizontal sliding movement in suitable guides 5. A pair of spaced blocks 7 7 are fixed to the rod 1 adj acent one end of the latter, and to these blocks are secured the lower ends of a carriage 10 that is vertically disposed. An arm 6 is pivoted at one end to the block 7 and the forward end of the arm projects beyond the front side of theleer. i

The structure and arrangement thus described is duplicated on the opposite side of the leer and the arms 6 respectively at their forward'end are connected by a cross member 8 having depending thereupon a glass as at 14 on a transvers 'bar arranged in the carriage 10; Atits free end lever 13 is pivotally connected to the upper end of a link 15, which link has its lower end pivotally c0nnected to an adjacent arm6 intermediate the ends of thearm.

A control rod 17 is pivoted adjacent its lower end to the lever 13 adjacent the pivoted end of the lever and this rod 17' extends vertically upwardly and is operable through a suitable guide provided therefor adjacent the upper end of cylinder 11. The rod 17 has projecting laterally therefrom a pair of spaced upper and lower valve actuating fingers 18'and 19 respectively.

A compressed air conduit 29 leading from a suitable source of supply has one end A r thereof leading directly to a conventional type of two-way valve '25 as shown. Valve 25 is suitably mounted and is arranged in a sub- I tion of the piston operable within said cylinder 11.

A vertically disposed two-way conventional type of valve 16 is located adjacent the cylinder 11, and the valve 16 includes an actuating stem 20 projecting beyond opposite ends of the valve casing so that the lower end of the stem may be engaged with the valve operating finger 19 when the lever 13 is in a raised position shown in Figure 1. The upper end of the valve stem 20 is adapted for engagement with the valve operating finger 18 for actuating the valve 16 up on downward movement of the rod 17 as caused by the downward movement of the lever 13 about its pivot 14. This downward movement of lever 13 is of course, as before set forth, caused by the downward movement of the piston in the cylinder 11, which downward movement of the piston results when valve 25 has been so operated as to apply compressed air from the valve to the upper end of the cylinder 11 throughthe' conduit B. Valve 16 controls a piston (not shown) operable in a horizontally disposed gylinder21as will be hereinafter made maniest.

In this connection, it will be seen that a branch conduitG leads from the conduit 29 to the valve 16. Cylinder 21 which is disposed horizontally and above valve 25 is connected with the valve 16 through the medium of a suitable conduit D, for supplying compressed air to the cylinder 21 at one end of the cylinder foreffecting an operation of the piston (not shown) in the cylinder 21, in one direction. A second conduit E connects the valve 16 with cylinder 21 for moving the piston (not shown) in cylinder 21 in an oppositedirection. The piston referred to and operable within cylinder 21 is provided with a suitable piston rod 22 projecting at its free end outwardly of the corresponding end of cylinder 21. Y V

' A bar 10 is disposed horizontally, and proj ects from one side of the carriage 1O substantially parallel to the rod 4. Remote from the carriage, there isarranged adjacent to and vided with an integral fork adapted to strad- .(iii

dle an adjacent portion of rod 4. Fixed to the rod 4 on opposite sides of the fork on said end of arm 24 are collars 32, 33.

Valve 25 is also provided with an actuating stem 28 that at its ends projects beyond the corresponding ends of the casing of the valve, andoneend'of stem 28 isadapted to be contacted by a valve operating finger 34 depending laterally from the bar 10' adj acent the carriage 10. The other end of the valve actuating stem 28 is adapted to be engaged by a similar actuating finger 35 depending from the bar 10' adjacent the bracket 10a,

The operation of the device may be briefly explained as follows:

With the parts in the position shown in Figure 1, piston rod 12 is permitted to move downwardly thus moving the lever 13 downwardly which lever 13 transmits its movement to arm 6 so that the ware engaging unit 9 is so disposed adjacent the glassware A as to be in position to effect a transfer of the glassware A from the conveyor 3 on to the. conveyor 2 upon nrovement of the rod 4 in a direction toward the right in Figure 1. When the piston rod 12 so moves downwardly, it will be seen that finger 18 contacting the adjacent end of valve stem 20 shifts the valve 16 so that air from valve 16 will pass through the conduit E into cylinder 21 for forcing the piston in the cylinder 21 in a suitable direction as to move the piston rod 22 to the leftin Figure 1 thus rocking arm 23 to the left, and arm 24 to the right.

Arm 24 being fthus rocked to the right, it

will be apparent that the fork on the freeend of the arm will engage with the collar 33 thus moving rod 4 to the right in Figure 1 resulting in a transfer of the warefrom conveyor 3 on to the conveyor 2.

Manifestly the carriage 10 will bemoved in a direction corresponding to that direction of movement of bar 4 just noted, with the result that the valve actuating finger 34 will contact the adjacent end of valve stem 28 thusshifting the valve 25 whereby air under pressure A will pass from the valve through the, conduit B into cylinder 11 for effecting a raising of the piston rod 12. When piston rod 12 is moved upwardly to the limit of its upward movement, valve actuating finger 19 engaging the adjacent or lower end of the valve stem 20 shifts the valve 16 whereby air under pressure from the valve 16 will then enter cylinder 21 through the conduit D forcing the piston rod 22 to the rightin Figure 1 resulting in a rocking of the arm 24 to the left in Figure 1 through the medium of the piston rod 22 and arm 23, arm 24 being rocked in said direction, the fork on the arm will engage the collar 32 for moving the rod 4 to the left in Figure 1 so that the parts then return to their normal position, or to that position shown in Figure 1.

\Vhen the parts are in that position shown in said figure, finger 35 contacts adjacent end of stem 28 for shifting valve25 upon continued movement of carriage 10 in a direction toward the left in Figure 1, thus efi'ecting a shifting valve 25 to permit air to pass into the top of cylinder 11 thereby causing the downward movement of rod 12 whereby the operation above described in detail is repeated.

It is thought that from the foregoing description, taken in connection with the accompanying drawings, a clear understanding of the operation, construction, utility and advantages of an invention of this character will now be had by those skilledin the art without a more detailed description.

Even though I have herein shown and described the preferred embodiment of the invention, it is to be understood that the same is susceptible of variations, modifications and improvements coming withm the scope of the appended claims.

Having thus described the invention, what I claim as new and desire to secure by Letters Patent is:

1. The combination with a travelling conveyor adapted to carry a plurality of articles, of a slidably mounted rod arranged at right angles to the conveyor, a carriage mounted on said rod for movement therewith, an arm pivoted at one end to the carriage and hav ing its free end normally projecting beyond the corresponding end of said rod for disposition transversely of the conveyor, means for actuating saidrod for effecting a movement of said arm transversely relative to the conveyor, said means including means for lifting and lowering said arm in predetermined relation with respect to the movement of said rod whereby said arm is moved transversely of the conveyor in one direction, lowered, and moved transversely relative to the conveyor in an opposite direction for transfering the article on the conveyor from the conveyor and then raised.

2. In combination with a movable conveyor, a rod disposed at right angles to the conveyor for reciprocatory movement relative to the conveyor, supporting means for the rod, an arm pivotally mounted on said rod and having an end portion adapted for disposition transversely of the conveyor, means for pivotally mounting said arm on said rod, valve controlled means operatively connected with said arm for raising and lowering the latter, valve control means operatively connected with said rod for reciprocating the latter, means operatively associated with said arm for efiecting an actuation of the second mentioned valve control means, means operatively associated with said rod for controlling actuation of the first mentioned valve control means whereby provision is made for said arm to be moved forward over the conveyor, lowered, moved rearwardly and then raised.

3. A leer including in combination, a pair of endless conveyors arranged at substantially right angles to each other, a rod mounted above one of said conveyors and substantially parallel thereto, means for slidably supporting said rod, an arm pivotally supported on said rod, valve controlled means for effecting a sliding movement of said rod and a lifting and lowering of said arm, said means including means controlled by the raising and lowering of said arm for effecting a reciprocation of said rod and additional means controlled by the reciprocation of said rod for effecting a raising and lowering of said arm, whereby said arm will be raised and lowered relative to said conveyor, in response to the reciprocation of said arm relative to the conveyor.

In testimony whereof I afl'ix my signature.

CLARENCE I. HALL. 

